Rate-Adaptive Multiple Input/Multiple Output (MIMO) Systems
First Claim
1. A system that includes a first terminal, where said first terminal comprises:
- N antennas, where N is at least one; and
a processor, responsive to M signals received from transmitting antennas of a second terminal by said N antennas, where M is greater than one, fordetermining an overall measure of goodness in detecting information received from said second terminal,determining attributes of preferred information transfer to said first terminal from said second terminal, in terms ofnumber of data streams,modulation methods, andcoding type and rate that said second terminal is to employ in next frame communication to said first terminal, andsending to said second terminal an instruction that specifies said number of data stream, modulation methods, and coding type and rate.
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Accused Products
Abstract
A rate-adaptive method of communicating over a multipath wireless communication system uses multiple links such that each end of a link uses multiple transmit and receive antennas. A number of independent streams that are to be transmitted for each link is determined based on an overall system performance measure. In addition, the system may also jointly determine the best modulation, coding, power control, and frequency assignment for each link, based on an overall system performance measure. In OFDM systems, the number of independent streams, as well as the modulation, coding, and power control, may be determined on a tone-by-tone basis based on an overall system performance measure.
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Citations
9 Claims
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1. A system that includes a first terminal, where said first terminal comprises:
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N antennas, where N is at least one; and a processor, responsive to M signals received from transmitting antennas of a second terminal by said N antennas, where M is greater than one, for determining an overall measure of goodness in detecting information received from said second terminal, determining attributes of preferred information transfer to said first terminal from said second terminal, in terms of number of data streams, modulation methods, and coding type and rate that said second terminal is to employ in next frame communication to said first terminal, and sending to said second terminal an instruction that specifies said number of data stream, modulation methods, and coding type and rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification